University Chemistry ›› 2021, Vol. 36 ›› Issue (6): 2006044.doi: 10.3866/PKU.DXHX202006044

• Chemistry Laboratory • Previous Articles     Next Articles

A Comprehensive Chemistry Experiment on the Adsorption of Phosphate by Ferrihydrite Loaded Sugarcane Bagasse

Junxia Yu1,*(), Ruyi Zhou1,2, Ruan Chi1   

  1. 1 Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430073, China
    2 School of Biological Engineering, Wuhan Polytechnic, Wuhan 430074, China
  • Received:2020-06-11 Accepted:2020-06-29 Published:2020-07-22
  • Contact: Junxia Yu


Ferrihydrite loaded sugarcane bagasse composite adsorbent with good adsorption performances for phosphate was prepared by in situ precipitation. The adsorbent was characterized by field emission scanning electron microscopy and energy dispersive X-ray spectroscopy (SEM-EDS), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction spectroscopy (XRD) and Zeta potential. Adsorption behavior and mechanism of phosphate on the composite adsorbent were investigated. Results showed that the adsorption capacity of bagasse increased significantly after loaded with ferrihydrite, and equilibrium reached within 30 min. Adsorption isotherm and kinetics of phosphate on the composite adsorbents could be predicted well by the Langmuir and pseudo-second-order model, respectively. Practical waste water treatment showed that 99.8% of phosphate could be removed from aqueous solution. This research content could be used as a comprehensive experiment for industrial analysis, applied chemistry and environmental engineering majors. It could improve students' study interesting, develop their capability to apply knowledge, and stimulate their innovation ability.

Key words: Comprehensive chemistry experiment, Sugarcane bagasse, Loaded, Ferrihydrite, Adsorption, Phosphate